Flow.unwrapped({Key key, FlowDelegate delegate, List<Widget> children: const [] })

Creates a flow layout.

Does not wrap the given children in repaint boundaries, unlike the default constructor. Useful when the child is trivial to paint or already contains a repaint boundary.

The delegate argument must not be null.

Source 

Flow.unwrapped({
  Key key,
  this.delegate,
  List<Widget> children: const <Widget>[],
}) : super(key: key, children: children) {
  assert(delegate != null);
}